Some investigations of melt fracture

Summary

During melt fracture shear stresses and velocity profiles were measured in capillaries and slits. Different polymers show large differences in flow behaviour during melt fracture. The type of melt fracture can be predicted from the shape of the velocity profile in front of the entrance of the capillary or slit. Particular attention was paid to the behaviour of high-density polyethylene during instable flow accompanied by pressure and output variations.

Keywords

Polymer Shear Stress Polyethylene Velocity Profile Flow Behaviour

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Paper presented at the Symposium at Leende of “De Nederlandse Rheologische Vereniging” on 21st and 22nd May 1970.